#include <bits/stdc++.h>
using namespace std;
#define LL long long
#define ULL unsigned long long

inline void init()
{

}

inline void solve()
{
    
}

int main()
{
    freopen("arena.in", "r", stdin);
    freopen("arena.out", "w", stdout);
    init();
    solve();

    return 0;
}